Eddy-Current Crank Detent Engine

The Mechanics:

A pocket-scale mechanical rotary hand-crank integrated with a programmable micro-stator eddy-current brake and a high-resolution magnetic Hall sensor. By modulating PWM current across the stator coils in real time, the handheld dynamically alters the physical torque resistance of the crank—simulating heavy iron gear ratchets, elastic spring tension, fluid viscosity, or sudden mechanical lockups in the player's fingers.

Utilitarian Value:

Upgrades passive rotational input into a bi-directional physical force-feedback actuator without fragile plastic gears or motor brush wear.

Target Ecosystem:

Tactile indie handheld consoles, pocket hardware inventors, and physical interactive fiction studios.